The First Multichroic Polarimeter Array on the Atacama Cosmology Telescope: Characterization and Performance

S. P. Ho; C. G. Pappas; J. Austermann; J. A. Beall; D. Becker; S. K. Choi; R. Datta; S. M. Duff; P. A. Gallardo; E. Grace; M. Hasselfield; S. W. Henderson; G. C. Hilton; J. Hubmayr; B. J. Koopman; J. V. Lanen; D. Li; J. McMahon; F. Nati; M. D. Niemack; P. Niraula; M. Salatino; A. Schillaci; B. L. Schmitt; S. M. Simon; S. T. Staggs; J. R. Stevens; J. T. Ward; E. J. Wollack; E. M. Vavagiakis

doi:10.1007/s10909-016-1573-1

The First Multichroic Polarimeter Array on the Atacama Cosmology Telescope: Characterization and Performance

S. P. Ho, C. G. Pappas, J. Austermann, J. A. Beall, D. Becker, S. K. Choi, R. Datta, S. M. Duff, P. A. Gallardo, E. Grace, M. Hasselfield, S. W. Henderson, G. C. Hilton, J. Hubmayr, B. J. Koopman, J. V. Lanen, D. Li, J. McMahon, F. Nati, M. D. NiemackP. Niraula, M. Salatino, A. Schillaci, B. L. Schmitt, S. M. Simon, S. T. Staggs, J. R. Stevens, J. T. Ward, E. J. Wollack, E. M. Vavagiakis

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

The Atacama Cosmology Telescope Polarimeter (ACTPol) is a polarization sensitive receiver for the 6-m Atacama Cosmology Telescope (ACT) and measures the small angular scale polarization anisotropies in the cosmic microwave background (CMB). The full focal plane is composed of three detector arrays, containing over 3000 transition edge sensors (TES detectors) in total. The first two detector arrays, observing at 146 GHz, were deployed in 2013 and 2014, respectively. The third and final array is composed of multichroic pixels sensitive to both 90 and 146 GHz and saw first light in February 2015. Fabricated at NIST, this dichroic array consists of 255 pixels, with a total of 1020 polarization sensitive bolometers and is coupled to the telescope with a monolithic array of broad-band silicon feedhorns. The detectors are read out using time-division SQUID multiplexing and cooled by a dilution refrigerator at 110 mK. We present an overview of the assembly and characterization of this multichroic array in the lab, and the initial detector performance in Chile. The detector array has a TES detector electrical yield of 85 %, a total array sensitivity of less than 10 μ Ks, and detector time constants and saturation powers suitable for ACT CMB observations.

Original language	English (US)
Pages (from-to)	559-567
Number of pages	9
Journal	Journal of Low Temperature Physics
Volume	184
Issue number	3-4
DOIs	https://doi.org/10.1007/s10909-016-1573-1
State	Published - Aug 1 2016

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
General Materials Science
Condensed Matter Physics

Keywords

ACTPol
Cosmic microwave background
Multichroic
Polarization
SQUID
Transition edge sensors

Access to Document

10.1007/s10909-016-1573-1

Cite this

Ho, S. P., Pappas, C. G., Austermann, J., Beall, J. A., Becker, D., Choi, S. K., Datta, R., Duff, S. M., Gallardo, P. A., Grace, E., Hasselfield, M., Henderson, S. W., Hilton, G. C., Hubmayr, J., Koopman, B. J., Lanen, J. V., Li, D., McMahon, J., Nati, F., ... Vavagiakis, E. M. (2016). The First Multichroic Polarimeter Array on the Atacama Cosmology Telescope: Characterization and Performance. Journal of Low Temperature Physics, 184(3-4), 559-567. https://doi.org/10.1007/s10909-016-1573-1

@article{a72652044e4348488aea5247459fcb39,

title = "The First Multichroic Polarimeter Array on the Atacama Cosmology Telescope: Characterization and Performance",

abstract = "The Atacama Cosmology Telescope Polarimeter (ACTPol) is a polarization sensitive receiver for the 6-m Atacama Cosmology Telescope (ACT) and measures the small angular scale polarization anisotropies in the cosmic microwave background (CMB). The full focal plane is composed of three detector arrays, containing over 3000 transition edge sensors (TES detectors) in total. The first two detector arrays, observing at 146 GHz, were deployed in 2013 and 2014, respectively. The third and final array is composed of multichroic pixels sensitive to both 90 and 146 GHz and saw first light in February 2015. Fabricated at NIST, this dichroic array consists of 255 pixels, with a total of 1020 polarization sensitive bolometers and is coupled to the telescope with a monolithic array of broad-band silicon feedhorns. The detectors are read out using time-division SQUID multiplexing and cooled by a dilution refrigerator at 110 mK. We present an overview of the assembly and characterization of this multichroic array in the lab, and the initial detector performance in Chile. The detector array has a TES detector electrical yield of 85 %, a total array sensitivity of less than 10 μ Ks, and detector time constants and saturation powers suitable for ACT CMB observations.",

keywords = "ACTPol, Cosmic microwave background, Multichroic, Polarization, SQUID, Transition edge sensors",

author = "Ho, {S. P.} and Pappas, {C. G.} and J. Austermann and Beall, {J. A.} and D. Becker and Choi, {S. K.} and R. Datta and Duff, {S. M.} and Gallardo, {P. A.} and E. Grace and M. Hasselfield and Henderson, {S. W.} and Hilton, {G. C.} and J. Hubmayr and Koopman, {B. J.} and Lanen, {J. V.} and D. Li and J. McMahon and F. Nati and Niemack, {M. D.} and P. Niraula and M. Salatino and A. Schillaci and Schmitt, {B. L.} and Simon, {S. M.} and Staggs, {S. T.} and Stevens, {J. R.} and Ward, {J. T.} and Wollack, {E. J.} and Vavagiakis, {E. M.}",

note = "Publisher Copyright: {\textcopyright} 2016, Springer Science+Business Media New York.",

year = "2016",

month = aug,

day = "1",

doi = "10.1007/s10909-016-1573-1",

language = "English (US)",

volume = "184",

pages = "559--567",

journal = "Journal of Low Temperature Physics",

issn = "0022-2291",

publisher = "Springer New York",

number = "3-4",

}

Ho, SP, Pappas, CG, Austermann, J, Beall, JA, Becker, D, Choi, SK, Datta, R, Duff, SM, Gallardo, PA, Grace, E, Hasselfield, M, Henderson, SW, Hilton, GC, Hubmayr, J, Koopman, BJ, Lanen, JV, Li, D, McMahon, J, Nati, F, Niemack, MD, Niraula, P, Salatino, M, Schillaci, A, Schmitt, BL, Simon, SM, Staggs, ST, Stevens, JR, Ward, JT, Wollack, EJ & Vavagiakis, EM 2016, 'The First Multichroic Polarimeter Array on the Atacama Cosmology Telescope: Characterization and Performance', Journal of Low Temperature Physics, vol. 184, no. 3-4, pp. 559-567. https://doi.org/10.1007/s10909-016-1573-1

TY - JOUR

T1 - The First Multichroic Polarimeter Array on the Atacama Cosmology Telescope

T2 - Characterization and Performance

AU - Ho, S. P.

AU - Pappas, C. G.

AU - Austermann, J.

AU - Beall, J. A.

AU - Becker, D.

AU - Choi, S. K.

AU - Datta, R.

AU - Duff, S. M.

AU - Gallardo, P. A.

AU - Grace, E.

AU - Hasselfield, M.

AU - Henderson, S. W.

AU - Hilton, G. C.

AU - Hubmayr, J.

AU - Koopman, B. J.

AU - Lanen, J. V.

AU - Li, D.

AU - McMahon, J.

AU - Nati, F.

AU - Niemack, M. D.

AU - Niraula, P.

AU - Salatino, M.

AU - Schillaci, A.

AU - Schmitt, B. L.

AU - Simon, S. M.

AU - Staggs, S. T.

AU - Stevens, J. R.

AU - Ward, J. T.

AU - Wollack, E. J.

AU - Vavagiakis, E. M.

PY - 2016/8/1

Y1 - 2016/8/1

N2 - The Atacama Cosmology Telescope Polarimeter (ACTPol) is a polarization sensitive receiver for the 6-m Atacama Cosmology Telescope (ACT) and measures the small angular scale polarization anisotropies in the cosmic microwave background (CMB). The full focal plane is composed of three detector arrays, containing over 3000 transition edge sensors (TES detectors) in total. The first two detector arrays, observing at 146 GHz, were deployed in 2013 and 2014, respectively. The third and final array is composed of multichroic pixels sensitive to both 90 and 146 GHz and saw first light in February 2015. Fabricated at NIST, this dichroic array consists of 255 pixels, with a total of 1020 polarization sensitive bolometers and is coupled to the telescope with a monolithic array of broad-band silicon feedhorns. The detectors are read out using time-division SQUID multiplexing and cooled by a dilution refrigerator at 110 mK. We present an overview of the assembly and characterization of this multichroic array in the lab, and the initial detector performance in Chile. The detector array has a TES detector electrical yield of 85 %, a total array sensitivity of less than 10 μ Ks, and detector time constants and saturation powers suitable for ACT CMB observations.

AB - The Atacama Cosmology Telescope Polarimeter (ACTPol) is a polarization sensitive receiver for the 6-m Atacama Cosmology Telescope (ACT) and measures the small angular scale polarization anisotropies in the cosmic microwave background (CMB). The full focal plane is composed of three detector arrays, containing over 3000 transition edge sensors (TES detectors) in total. The first two detector arrays, observing at 146 GHz, were deployed in 2013 and 2014, respectively. The third and final array is composed of multichroic pixels sensitive to both 90 and 146 GHz and saw first light in February 2015. Fabricated at NIST, this dichroic array consists of 255 pixels, with a total of 1020 polarization sensitive bolometers and is coupled to the telescope with a monolithic array of broad-band silicon feedhorns. The detectors are read out using time-division SQUID multiplexing and cooled by a dilution refrigerator at 110 mK. We present an overview of the assembly and characterization of this multichroic array in the lab, and the initial detector performance in Chile. The detector array has a TES detector electrical yield of 85 %, a total array sensitivity of less than 10 μ Ks, and detector time constants and saturation powers suitable for ACT CMB observations.

KW - ACTPol

KW - Cosmic microwave background

KW - Multichroic

KW - Polarization

KW - SQUID

KW - Transition edge sensors

UR - http://www.scopus.com/inward/record.url?scp=84961193509&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84961193509&partnerID=8YFLogxK

U2 - 10.1007/s10909-016-1573-1

DO - 10.1007/s10909-016-1573-1

M3 - Article

AN - SCOPUS:84961193509

SN - 0022-2291

VL - 184

SP - 559

EP - 567

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

IS - 3-4

ER -

The First Multichroic Polarimeter Array on the Atacama Cosmology Telescope: Characterization and Performance

Abstract

All Science Journal Classification (ASJC) codes

Keywords

Access to Document

Other files and links

Fingerprint

Cite this